<template>
  <view>
    <view class="goods-item">
      <!-- 左侧的盒子 -->
      <view class="goods-items-left">
        <radio :checked="goods.goods_state" color="#c00000" v-if="showRadio" @click="radioClickHandler"></radio>
        <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
      </view>
      <!-- 右侧的盒子 -->
      <view class="goods-item-right">
        <!-- 商品的名字 -->
        <text class="goods-name">{{goods.goods_name}}</text>

        <view class="goods-info-box">
          <!-- 商品的价格 -->
          <view class="goods-price">
            ¥{{goods.goods_price|tofixed}}
          </view>
          <uni-number-box :min="1" background="#ff0000" color="#fff" :value="goods.goods_count" v-if="showNum"
            @change="numChangeHandler" />
        </view>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    props: {
      goods: {
        type: Object,
        default: ''
      },
      // 是否展示图片左侧的 radio
      showRadio: {
        type: Boolean,
        // 如果外界没有指定 show-radio 属性的值，则默认不展示 radio 组件
        default: false,
      },
      // 是否展示价格右侧的 NumberBox 组件
      showNum: {
        type: Boolean,
        default: false,
      },
    },

    data() {

      return {
        //失效图片 默认图片
        defaultPic: 'https://c-ssl.duitang.com/uploads/item/201710/05/20171005185728_tBsev.jpeg',

      };
    },
    methods: {
      // 这是radio 组件的点击事件处理函数
      radioClickHandler() {
        // 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
        // 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
        this.$emit('radio-change', {
          goods_id: this.goods.goods_id,
          // 商品最新的勾选状态
          goods_state: !this.goods.goods_state
        })
      },

      numChangeHandler(val) {
        this.$emit('num-change', {
          // 商品的 Id
          goods_id: this.goods.goods_id,
          // 商品的最新数量
          goods_count: +val
        })
      }
    },
    filters: {
      tofixed(num) {
        return Number(num).toFixed(2)
      }
    }
  }
</script>

<style lang="scss">
  .goods-item {
    display: flex;
    padding: 10px 5px;
    border-bottom: 1px solid #e2e2e2;

    .goods-items-left {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-right: 5px;

      .goods-pic {
        width: 100px;
        height: 100px;
      }
    }

    .goods-item-right {
      display: flex;
      flex: 1;
      flex-direction: column;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
      }

      .goods-info-box {
        display: flex;
        justify-content: space-between;

        .goods-price {
          color: #c00000;
          font-size: 16px;
        }
      }
    }
  }
</style>
